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Enhanced photoresponse of inkjet printed ZnO thin films induced by chemically capped CdS nanoparticles by dip coating
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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2009 (English)In: Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X, Vol. 7402, 740207- p.Article in journal (Refereed) Published
Abstract [en]

Monodispersed CdS nanoparticles (NP) are dip coated on porous ZnO thin film deposited by inkjet printing. Optical absorption characteristics of the composite films show that the composite exhibits two main peaks centered at 355 nm due to the absorption at UV region from ZnO, and 433 nm arising from CdS NP. On UV radiations the electrical conductivity of CdS/ZnO composite thin film with 5 dip cycles is found to be enhanced more than three orders magnitude compared with that of the ZnO which we attribute to be the effect of interfacial charge transfer. Also, the UV photoresponse of ZnO shows pronounced enhancement after CdS capping.

Place, publisher, year, edition, pages
2009. Vol. 7402, 740207- p.
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Engineering and Technology
URN: urn:nbn:se:uu:diva-139513DOI: 10.1117/12.827022OAI: oai:DiVA.org:uu-139513DiVA: diva2:381477
Available from: 2010-12-27 Created: 2010-12-27 Last updated: 2011-02-25

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